package thread_test;

/**
 * @author ten_fei
 * @create 2021-02-18 9:56
 */

/**
 * 多线程经典问题
 * 生产者，消费者问题
 */

class Clerk {

    private int productCount = 0;

    //生产产品
    public synchronized void produceProduct() {
        if (productCount < 20) {
            productCount++;
            System.out.println(Thread.currentThread().getName() + "：开始生产第" + productCount + "个产品！！！");
            notify();
        } else {
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }

    //消费产品
    public synchronized void consumeProduct() {
        if (productCount > 0) {
            System.out.println(Thread.currentThread().getName() + "：开始消费第" + productCount + "个产品！！！");
            productCount--;
            notify();
        } else {
            try {
                wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

//生产者
class Producer extends Thread {
    private Clerk clerk;

    public Producer(Clerk clerk) {
        this.clerk = clerk;
    }


    public void run() {
        System.out.println(getName() + ":开始生产产品......");
        while (true) {
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            clerk.produceProduct();
        }
    }
}

//消费者
class Consumer extends Thread {
    private Clerk clerk;

    public Consumer(Clerk clerk) {
        this.clerk = clerk;
    }

    public void run() {
        System.out.println(getName() + ":开始消费产品......");
        while (true) {
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            clerk.consumeProduct();
        }
    }
}

public class ThreadTest02 {
    public static void main(String[] args) {
        Clerk clerk = new Clerk();
        Producer p1 = new Producer(clerk);
        p1.setName("生产者1");

        Consumer c1 = new Consumer(clerk);
        c1.setName("消费者1");

        p1.start();

        c1.start();
    }
}











